Asynchronous anticontention logic for bi-directional signals

Details Asynchronous anticontention logic for bi-directional signals Asynchronous anticontention logic for bi-directional signals

1996-06-28

1998-08-04

Santamauro, Jon

Electronic digital logic circuitry

Interface

Current driving

326 21, 326 26, 326 93, H03K 190175

Patent

active

057899444

ABSTRACT:
An asynchronous anticontention circuit for a bi-directional bus. The asynchronous anticontention circuit comprises an anticontention circuit coupled to an asynchronous delay circuit. The anticontention circuit receives a driver select signal and generates a first signal and a second signal. The first signal and the second signal each have an active state and an inactive state. When the driver select signal is in a first logic state, the first signal is in the inactive state and the second signal is in the active state. When the driver select signal transitions from the first logic state to a second logic state, the anticontention circuit transitions the second signal from the active state to the inactive state. The asynchronous delay circuit couples the transition of the second signal to the anticontention circuit after a delay of time. After the delay of time, the anticontention circuit transitions the first signal from the inactive state to the active state. In operation, the first signal may be coupled to a first input/output circuit, the second signal may be coupled to a second input/output circuit, and the first and second input/output circuits may be coupled to a bi-directional bus.

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